President Donald Trump is expected to sign an executive order soon, possibly as early as Tuesday, creating a U.S. Space Command that will better organize and advance the military's vast operations in space, U.S. officials say.

The use of armed drones in the Middle East, driven largely by sales from China, has grown significantly in the past few years with an increasing number of countries and other parties using them in regional conflicts to lethal effects, a new report said.

California moved Friday to eliminate climate-changing fossil fuels from its fleet of 12,000 transit buses, enacting a first-in-the-nation mandate that will vastly increase the number of electric buses on the road.

Apple's iPhones and iPads have gotten free software updates, including battery improvements and a smarter virtual assistant. The new features and capabilities in the update, iOS 9, are primarily refinements rather than anything transformative.